The ACFC-I low-power gas ultrasonic flowmeter is a precision multi-channel ultrasonic flowmeter designed specifically for measuring natural gas in medium and low-pressure pipeline networks. It is suitable for measuring natural gas in urban gas and various industrial and commercial enterprises, as well as for measuring process gases such as coalbed methane, nitrogen, and air.
The product has high measurement accuracy, wide range ratio, low starting flow rate, high noise resistance, and low operating power consumption. It adopts an intrinsic safety explosion-proof type, with small size and light weight, safe and reliable use, simple installation and maintenance, effectively reducing the user's use and maintenance costs, while improving the operational management efficiency and lean management level of gas enterprises, and reducing the supply and sales gap.
| 序号 | Detailed features |
| 1 | Crossfire channel arrangement |
| 2 | 1.0 level accuracy |
| 3 | Caliber range DN25~DN200 |
| 4 | Pressure specificationsPN16~PN40 |
| 5 | No movable parts, low maintenance |
| 6 | Built in temperature and pressure sensors |
| 7 | Wireless remote data transmission |
| 8 | Support battery power supply |
| 9 | Multiple data logs |
| 10 | Intelligent diagnosis, precision warning, fault alarm |
| 11 | Embedded rectifier, low straight pipe section |
| 12 | Intrinsically safe explosion-proof |
1. Low power consumption, wireless communication
Adopting low-power design, the built-in battery can provide power for 5 years, integrated wireless communication module, and data can be connected to the cloud management system.
2. PTZ/EVC function
Built in temperature sensor and high-precision temperature compensated digital pressure sensor, integrated with AGA Report No.8 compression factor algorithm, can convert working condition volume flow rate into standard condition volume flow rate, can be matched with gas card valve, realizing safety control and prepaid management.
3. Embedded rectifier
Embedded flow regulator eliminates eddy currents and asymmetric flows, ensuring measurement accuracy. The front straight pipe section can be reduced to 5D.
4.data storage
Having a comprehensive logging system, such as measurement data logs, parameter modification logs, and operation alarm logs; Adopting backup storage mode and multi-level password protection provides great security for storing data.
5. Supporting ACFC Explorer PC software
Supporting ACFC Explorer PC software for graphical configuration and online diagnosis of flow meters, supporting encrypted export of service packages for offline diagnosis.
1.0 level accuracy error range： qmin≤q＜qt:＜±2% qt≤q≤ qmax:＜±1% repetitiveness： qmin≤q＜qt :＜0.4% qt≤q≤ qmax:＜0.2% | parameter/口径 | DN25 | DN32 | DN40 | DN50 | DN80 | DN100 | DN150 | DN200 |
qmax[m³/h] | 40 | 65 | 100 | 160 | 400 | 640 | 1440 | 2560 | |
qt[m³/h] | 4 | 6.5 | 10 | 16 | 40 | 64 | 144 | 256 | |
qmin[m³/h] | 0.7 | 1 | 1.5 | 1.6 | 3 | 4 | 9 | 16 | |
Start flow rate[m³/h] | 0.3 | 0.3 | 0.4 | 0.5 | 1 | 1.2 | 3 | 4 | |
turndown ratio | 57 | 65 | 66 | 100 | 133 | 160 | 160 | 160 | |
Channels | 1 channel | 2channels | 3channels | 4 channels | |||||
caliber | flange inner diameter（mm） | Flange SpecificationPN16 | Flange SpecificationPN25 | Flange SpecificationPN40 | weight（kg） | ||||||
A（mm) | L（mm） | H（mm） | A（mm) | L（mm） | H（mm） | A（mm) | L（mm） | H（mm） | |||
DN25 | 25 | 132 | 200 | 293 | 132 | 200 | 293 | 132 | 200 | 293 | 13 |
DN32 | 32 | 143 | 200 | 313 | 143 | 200 | 313 | 143 | 200 | 313 | 15 |
DN40 | 40 | 153 | 200 | 313 | 153 | 200 | 313 | 153 | 200 | 313 | 18 |
DN50 | 50 | 172 | 200 | 366 | 172 | 200 | 366 | 172 | 200 | 366 | 20 |
DN80 | 80 | 203 | 240 | 413 | 203 | 240 | 413 | 203 | 240 | 413 | 25.4 |
DN100 | 100 | 218 | 300 | 438 | 218 | 300 | 445 | 218 | 300 | 445 | 36 |
DN150 | 150 | 294 | 450 | 505 | 294 | 450 | 512 | 294 | 450 | 512 | 103 |
DN200 | 200 | 339 | 600 | 547.5 | 339 | 600 | 557.5 | 339 | 600 | 565 | 128 |
project | Technical Specifications | |
Nominal diameter | DN25/DN32/DN40/DN50/DN80/DN100/DN150/DN200 | |
measuring medium | Non corrosive gases such as natural gas, air, nitrogen, etc | |
Nominal Pressure | PN16、PN25、PN40 | |
medium temperature | (-30~+70)℃ | |
medium pressure | (0~4)MPa | |
Environmental temperature for use | (-40~+70)℃ | |
Storage temperature | (-40~+70)℃ | |
accuracy class | 1.0 级 | |
overload | 120%Qmax | |
body material | 碳钢 /304/316 | |
Explosion-proof rating | Ex ib IIB T4 Gb | |
Protection level | IP65 | |
power supply | Built in battery, with a lifespan of 5 years (at an ambient temperature of 20 ℃) Battery voltage: 7.2V | |
external power supply：(11-17)VDC/0.5W( Explosion proof occasions ) (11-33)VDC/0.5W( Non explosion proof occasions ) | ||
Intrinsic safety parameters of power interface | Ui=17V Ii=0.5A Pi=3W Ci=1.26uF Li=0.01mH | |
Installation method | Horizontal or vertical | |
local display | cumulative flow | 00000000.00 Nm³ 或 000000000.0 Nm³(10 位 ) |
instantaneous flow rate | Instantaneous standard conditions/instantaneous operating conditions, display with 6 digits, 1 or 2 decimal places | |
Temperature and pressure | temperature 000.0℃ ； Pressure (absolute pressure) 000.00KPa/MPa | |
backlight | Backlight button lights up, automatically turns off after 1 minute of inactivity | |
other | NB signal quality, battery level, power supply mode, alarm/fault codes | |
Technical parameters of temperature sensor | ||
Temperature sensor type | Platinum resistance sensor Pt1000 A-level accuracy | |
measurement range | (-40~80)℃ | |
measurement error | ＜±0.3℃ | |
Technical parameters of pressure sensor | ||
measurement range | (0~0.5)MPa、(0~1.0)MPa、(0~1.6)MPa、(0~2.5)MPa、(0~4.0)MPa | |
measurement type | Absolute pressure | |
measurement accuracy | ＜±0.1%FS | |
RS485 communication parameters | ||
communication protocol | Modbus RTU | |
Communication speed | 9600bps/19200bps/38400bps/115200bps | |
Mailing Address | 1-247 | |
High frequency pulse output parameters (for metrological verification) | ||
output format | Internally pull up | |
Maximum withstand voltage | 33VDC | |
power supply voltage | External power supply，(5~30)VDC | |
Maximum output frequency | 3.36kHz | |
Low level voltage | ＜0.7V | |
High level voltage | ＞0.7VDD，(RL＞1.5kΩ) | |
Low frequency pulse output parameters (billing system) | ||
output format | Internally pull up | |
Maximum withstand voltage | 33VDC | |
power supply voltage | External power supply，(5~30)VDC | |
Maximum output frequency | 100Hz | |
Low level voltage | ＜0.7V | |
High level voltage | ＞0.7VDD，(RL＞1.5kΩ) | |
Simulate output interface parameters | ||
constant current mode | (4-20)mA | |
basic error | ±0.1%FS | |
Wireless communication parameters | ||
Communication Type | NB-IoT | |
wireless network | Telecom, China Mobile, China Unicom | |
Data reporting frequency | External power supply ≥ 5 minutes, battery power supply ≥ 1 hour, supporting user settings | |
Product Model | Remarks | ||||||
ACFC | |||||||
-I | measuring medium | ||||||
G | natural gas | ||||||
A | Air/Nitrogen | ||||||
X | Other gases | ||||||
accuracy class | |||||||
B | Level 1.0 | ||||||
Nominal diameter | |||||||
DN25 | DN25 | mono | |||||
DN32 | DN32 | mono | |||||
DN40 | DN40 | mono | |||||
DN50 | DN50 | dual-channel | |||||
DN80 | DN80 | Three channels | |||||
DN100 | DN100 | Four channels | |||||
DN150 | DN150 | Four channels | |||||
DN200 | DN200 | Four channels | |||||
DNX | Customized Caliber | ||||||
pressure rating | |||||||
PN16 | 1.6MPa | ||||||
PN25 | 2.5MPa | ||||||
PN40 | 4.0MPa | ||||||
X | Customized pressure | ||||||
ACFC | -I | G | B | DN50 | PN16 | ||
